Question

the industrial revolution
the industrial revolution
not exactly the \bright\ future they expected...
during the 19th century, the industrial
revolution changed the face of the world.
large factories sprouted up across the globe
and mechanical wonders sped up the
process of manufacturing everything from
metal tools to clothing. this made vast
amounts of quality items available to people
from all walks of life.

one side-effect of the revolution, though,
was the introduction of pollution.
smokestacks belched black clouds across
the countryside, coating britain in dark soot.

what effect do you think this
would have on the trees that the
peppered moth rested on?
select only the best answer.

there would be no effect on the trees.
the trees would become lighter in color.
the trees would become darker in color.
the trees would lose all of their leaves.
the trees would hibernate.
the trees would wither and die.

Explanation:

The Industrial Revolution caused pollution with smokestacks belching black soot. This soot would coat the trees, making them darker in color. The other options are incorrect: no effect is wrong as pollution impacts them; lighter color contradicts the soot coating; losing all leaves, hibernation, or withering/dying are not direct effects of just soot coating (the question is about color change from the given context of soot).

Answer:

The trees would become darker in color.